ADM & Sub Aspida
User Manual
Int. Approved
Document ref: PSA-811-22
March 2020
Page 29 of 45
Copyright © 2017 Analox Ltd. All Rights Reserved.
Commercial in Confidence
7.3
Sensor calibration
Each Aspida offers an on-device calibration feature. The set of calibrations available on each
Aspida type are shown in the table below. For a calibration due notification to be cleared for a
sensor, the user must perform all of the calibrations available for the sensor. For example, an ADM
Aspida requires both a low and high oxygen calibration to be performed using calibration gas in
order to clear a calibration due notification, whereas a Sub Aspida need only a high oxygen
calibration in fresh air.
Aspida type
Carbon dioxide
calibrations available on
device
Oxygen calibrations
available on device
Sub Aspida
High and low
High cal (fresh air) only
ADM Aspida
High and low
High and low
WARNING: ALWAYS ENSURE THAT THE CALIBRATION GAS IS SUITABLE
FOR USE. INACCURACY IN CALIBRATION OF THE UNIT WILL
CAUSE AN INACCURACY OF THE DISPLAYED AND ALARMED
VALUES. CERTIFIED CALIBRATION GAS SHOULD ALWAYS BE
USED WHEN CALIBRATING CO
2
SENSORS.
7.3.1
Perform an O
2
sensor calibration:
1]
Press the
button to access the device menu.
2]
Use the
button multiple times to highlight the
icon (initially off the
display to the right) and press
.
3]
Using the
and
. Buttons and and icons, adjust the displayed value to
the correct calibration value corresponding to the calibration gas used.
4]
When correctly set, confirm the calibration using the
icon and
. button.
Figure 16
Calibration data entry screen (ready to confirm calibration)
5]
The unit will now sample the ambient air for 30 seconds to detect a stable gas
reading. The progress of the sampling will be displayed on screen as shown
below.
Figure 17
Calibration progress
6]
When the sampling process has complete, an audible alert will be given, and a
calibration confirmation screen will be shown as below.
Summary of Contents for ADM Aspida
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